.session_panel{
  background: #2d3a4b;
  width: 100%;
  height: 100%;
  .panel_content{
    width: 520px;
    height: 50%;
    // border: red 1px solid;
    transform: translateY(50%);
    position: fixed;
    left: 50%;
    margin-left: -260px;
    text-align: center;
    color: #eee;
    .title{
      font-size: 26px;
      margin: 20px 0px;
    }
    .login_input{
      width: 80%;
      text-align: center;
      margin: 30px 0px;
      padding: 0px 10%;
      .main_content{
        position: relative;
        width: 100%;
        .front_image{
          position: absolute;
          left: 10px;
          top: 15px;
          font-size: 20px;
        }
        .last_front_image{
          position: absolute;
          top: 15px;
          right: 10px;
          font-size: 20px;
        }
        input{
          width: 90%;
          height: 47px;
          background: transparent;
          color: aliceblue;
          padding-left: 35px;
          border-radius: 6px;
          font-size: 18px;
        }
      }
    }
    // panel_content
    .land{
      display: inline-block;
      height: 44px;
      width: 45%;
      background-color: #1890ff;
      border-radius: 8px;
      font-size: 15px;
      color: aliceblue;
      border: 0px;
    }
    // panel_content
    .other_bottom{
      display: flex;
      justify-content: space-between;
      padding: 0px 10%;
    }
  }
}
html,body {
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
}
// notice
.notice{
  color: red;
  font-size: 15px;
}
// error
.error_hint{
  float: right;
  color: red;
  font-size: 14px;
}

// 一个专门用来隐藏的类
.hidden_element{
  display: none;
}
